Air and gas mixing device.



S. H. HALE.

AIR AND GAS MIXING DEVICE.

APPLIoATIoN FILED MAR. 2. 1910.

Patented Sept. 20, 1910.

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S. H. HALE.

A1B AND GAS MIXING DBVIGB.

APPLIGATION IILBD MAB- 2; 1910.

Patented Sept. 20, 1910.

2 SHEETS-SHEET 2.

,25. eratin' ff STATES PATENT onirica STEPHEN H.. 'HALE 0F NEODESHA, KANSAS.

' llo'alllwhom 'it'may.concern/.1'y

l 13e 1 known-that I, S'iPnEN H. HALE, a c ltizenof the United States, residing at Neodesha, lin thepounty of'Wilson, State of .b Kansas, 4have invented certain new and useful, Improvements in- Air and Gas Mixing Devices; andfl'i do hereby declare the fol- Y "lowing to be afull, clear, and exact descrip- `tion` of'lthe` invention, Such as will enable 10" others skilled innthe art to'which it appertains `to make ad'- use the same. ltllhis: invention relates ,to air and gas mixing( devices and is particularly adapted for usefin connection with the burning of natural' 15 gasjartiticial gas, and'all other gaseous ina- 4- t i`1i a'.ls-wh1ch vrequ1re to be mixed with air 11i-"order toobtain the proper combustion and greatest number of heat units. 1; fi'The objecty of the invention is the'produc- ?'0,-ti 0n fof a .device of the character named *i fwhereinthe means for controlling the passage of air 'and the means for controlling the passage ofgas through said device are 4simultaneously `operated yby a, common opelement and said means are so cor- `relate that when a given quantity of gas passes through the device, a given `quantity y `ofair Willalso pass therethrough and as the yquantity of gasis increased or decreased'the A3Q :quantity of 'air .will be proportionately increased ordecreased. 'i l i' Another object of the invention resides in providingmeans vwhereby the relation be- 'tween the quantities of air and gas passing LW-"through the device may be varied so that j said evice may be utilized in connect-ion withdifferent gases, some of lWhichrequire a. greater or less degree of air to a given .quantity of-gas than others 4in order'to ob- .tain'the best results with respect to combustion. Still another' object of the invention residesy in providing an indicating mechanism A in conjunction with the device which will ,\45 c'onstantly 'show the' amount of gas being "-itilized with a given known pressure.

. With the above and other objects in view the vinvention consists inthe details of conj'struction and in the arrangement and comt 59 p binat-ion of parts to be hereinafter more fully l '55 drawings wherein likeI characters of refer- Specification of Letters Patent. Application 'lled March 2, 1910. Serial No. 546,881.

AIR AND eas'MIxING DEVICE.

Patented sept. 2o, .1910.

form ofthe invention incorprated therein. 65 l Fig. Q, a detail perspective view-of the key for operating the modified fqxm illustrated in Fig. 5; and,` Fig. 7 is a section on the line 7-7 of Fig. 1.

Referring to the drawin s, the invention '10 is shown as comprising a va ve casing 10 provided with a' longitudinal bore l1 and a y transverse tapering bore 12.' Secured viny th'e bore llat one end thereofthrough the medium of a threaded enga ement is a pipe 12 75, which leads from a suitate gas supply, while another ipe 13de secured to' the opposite' end of tiie valve casing f10 by means of a .threaded band 14'; said pipe 13 leading to a desired distributing point. Mounted in the 80 tapering bore 12 isa correspondingly shaped plug -15 which is provided with a transverse aperture 16, the greater portion of which is.. 1 circular in transverse section, but which terminates atone side in a V-shaped extension 8 5 17. The position of the bore 16 is such that when the plug 15 is rotated a quarter of 'a turn in one direction said bore will register with the bore 11 and connect the ipes 12 and 13, ywhile a rotation of the p ug 15 a 90 quarter turn in the opposite direction will entirely move the bore 1G out of registration with the bore 11 and close communication between the pipes 12' and13. The plug'15 is held against longitudinal displacement 95 from the bore 12 in which it is seatedby forming a reduced threaded extension 18v on one end of said plug uponwhich is passed a washer 19, the latter being bound againstthe casing 10 by means of a nut 20 working 100 on the threaded extension 18. In order to' conveniently rotate the plug 15 '1n- 1t s seat the end thereof `opposite the' extension 1s als provided, with an extension which in-.. cludes .a'squarcd mterrnedlate ort1on21, a-105 circular inner portion 22 an a redueed gthreaded `outer portion 23.y Mounted on the top ofthe plug 15and mounted on the inner clrculary portiony 22 is a segmental Adial plate- 26; said lever and dial plat-e being secured against displacement by a nut 27 working on the threaded outer portion 23. From the construction just described it willbe apparent that any oscillation of the lever 24 will i'n turn cause a rotation of the plug 15 and enable the passage of gas from the pipe 12 to thepipe 13 to be readily and easily controlled.

The pipe 13 is provided at dia-metrically opposite points with corresponding angular 4cut-away portions 28 and.r 29, one face of each of said cut-away portions being disposed at right angles to the longitudinal axis ot' said pipe, while the other faces of each cutaway portion is inclined" outwardly from the longitudinal axis of said pipe. Mounted on the pipe 13 and adapted to cover and uncover in its movements the cut-away portions 28 and .29 is a sliding sleeve 30 which is connected with the lever 24 by means of a link 31 one end of which is pivotally connected with said sleeve and the' other end with the extension25 yof the lever 24 so that when said leverl is actuated it will simultav vneously rotate the plug 15 andy produce a sliding movement of the sleeve on the pipe 13.

Mounted in the end ofthe casing 10 so as to be disposed within the pipe 13 with its bore in registration with the bore 11 of said casingis a tapering nozzle 32 the delivery end of which is dis osed between the cutaway portions 28 an '29 slightly inward of4 the outermost limit of same. As some gases requirea greater amount of 4air mixed therewith than others it is necessary to provide means :tor varying the amount of movement imparted'to the sleeve 30 by a given movement of the lever 24. To this end the lower portion 25' of said leveris provided with a plurality of apertures `33 disposed longitudiof said lever while the adjacent end of the link 31 is likewise provided with a longitudinally disposed plurality of apertunes 34. It will thus be obvious that any respective' pair of apertures 33 and 34 may be brought into-registration .and the lever and links secured together'through the Vmedium of a pivot pin 35 inserted through said apertures. It will be further appa'rentvthat the limits of movement of the sleeve 3U may be varied by moving the connection between link 31 and the lever 24'longitudinallyot` said link while the length'of the movement of said sleeve may be varied by shifting the connection between the lever 24 and the link 31 lon itudinally ofsaid lever.

The mo iied form of construction illustrated in Fig.' 5 is adaptedv for use in the eration of same gas the lresult of carelessness erosie or by persons with mischievous intent. To this end the plug 15 isprovidedvwith-a reduced squared upper end 36 on`V whichis mounted a crank arm 3f, while a link 36 is pivotally connected with the free end of said crank arm and with the sleeve 30. The opf eration of the device constructed in accordvance with what is shown in Fig. 5 is had through the instrumentality of a detachable key 38 adapted for interlocking engagement with the squared headl 36 of the plug 15.

In operating the device it'is only necessary to'move the lever 24 in the direction of .the arrow shown in Fig.` 1. Such movementof saidlever will institute the rotation yof the plug 15 to open.communication-between the pipes 12 and 13 and atjthel same time move the sleeve 30 toward the'casing` 10 and un i cover the cut-away portions 28 *and 29' to permit the entrance of air "into the pipe 13 to be mixed with gas issuing from the nozzle 32. As the aperture 16fis moved into' full 1 registration with the bore 11 the head of gas passing through the nozzleI 32 is constantly increased and consequently the suction pro- 90 duced at the mouthof said nozzleis projortionately increased. ,This condition ren;-

ers it necessary to increase the-size ofthe air inlet opening at a less rate than ull registration of the bore 16 with the borell is had in orderl to allow yfor the increased suction produced at the mouth of the nozzle Y 32 owingto the increasing head of gas. -This is accomplished by the peculiar mannerin which the cut-away portions 28 and 29'are formed; the openings formed by said portions converging in the direction of move` ment of the sleeve 30 duringthe .operation ofthe device. j

Owing to the "peculiar formation of the bore 16 the number of feet of gas passing through the line under a givenpressure canv be lpositively calculated with respect to the various positions of the plug' 15 during its rotation by the lever 24, which will enable 'a suitable table to be compiled and ap lied tothe dial plate 26 so that the number yof feet of gasrpassing through the line at any given position of the lever 24V will be indi-- y cated by the dial plate. Y 11'5 What is claimed is: 1. In an air and gas mixing'device,J the combination of a mixing chamber, a gas in# `let valve and 'an air inlet valve, means for opening said valves simultaneously and'for 120 closing them simultaneously,l said valves vbeing constructed'and arranged for rogresf. sively increasingthe effective area o the air. inlet valve at a constantly diminishing ratio?A and for progressively increasing thefeiee- 125 tive area of the gas inlet valve;

2. In an air and gas mixing device, the combination of a mixing chamber, a gas in.- let valve provided with a tapering ,port

adapted to be opened from its narrow.A 'endf1n3i0 4 toward its broad enti, a tapering air inlet valve adapted to be opened from its broad end toward its narrow end, and means for simultaneously opening and closing said. valves.'

3. Inan air and gas mixing', device, the comblnatlon of a mlxlng cham er, a gas 1nlet valve, an air inletvvalve provided with a tapering opening' adapted to be uncovered.

n simultaneously opening the -gas inlet valve and uncovering the opening of the air inlet valve. l l

4. In an air and gas mixing device, the combination of a casing forming a mixing chamber and provided with a tapering air inlet openingga sliding closure adapted to uncover said air inlet opening from its broad end toward its narrow end `when movedin one direction, a gas inlet valve, and a common means for simultaneously 0`ening the gas inlet valve and moving said s iding closure to uncover the air'i'nlet opening.

In testimony whereof, I affix my signature, in presence of two Witnesses.

- STEPHEN H. HALE.

Witnesses:

S. W. MILLER, M. I. BAUMGARDNEB. 

